Fix rules metadata

Author: Yannick Croissant

lib/rules/forbid-component-props.js

@@ -16,7 +16,11 @@ var DEFAULTS = ['className', 'style'];
 
 module.exports = {
   meta: {
-    docs: {},
+    docs: {
+      description: 'Forbid certain props on components',
+      category: 'Best Practices',
+      recommended: false
+    },
 
     schema: [{
       type: 'object',

lib/rules/no-render-return-value.js

@@ -13,9 +13,9 @@ var versionUtil = require('../util/version');
 module.exports = {
   meta: {
     docs: {
-      description: 'Prevent multiple component definition per file',
+      description: 'Prevent usage of the return value of React.render',
       category: 'Best Practices',
-      recommended: false
+      recommended: true
     },
     schema: []
   },

lib/rules/require-render-return.js

@@ -15,7 +15,7 @@ module.exports = {
     docs: {
       description: 'Enforce ES5 or ES6 class for returning value in render function',
       category: 'Possible Errors',
-      recommended: false
+      recommended: true
     },
     schema: [{}]
   },